148 lines
3.8 KiB
C
148 lines
3.8 KiB
C
/* $NetBSD: delch.c,v 1.22 2009/07/22 16:57:14 roy Exp $ */
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/*
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* Copyright (c) 1981, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)delch.c 8.2 (Berkeley) 5/4/94";
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#else
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__RCSID("$NetBSD: delch.c,v 1.22 2009/07/22 16:57:14 roy Exp $");
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#endif
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#endif /* not lint */
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#include <string.h>
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#include <stdlib.h>
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#include "curses.h"
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#include "curses_private.h"
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#ifndef _CURSES_USE_MACROS
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/*
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* delch --
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* Do a delete-char on the line, leaving (cury, curx) unchanged.
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*/
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int
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delch(void)
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{
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return wdelch(stdscr);
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}
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/*
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* mvdelch --
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* Do a delete-char on the line at (y, x) on stdscr.
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*/
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int
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mvdelch(int y, int x)
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{
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return mvwdelch(stdscr, y, x);
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}
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/*
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* mvwdelch --
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* Do a delete-char on the line at (y, x) of the given window.
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*/
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int
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mvwdelch(WINDOW *win, int y, int x)
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{
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if (wmove(win, y, x) == ERR)
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return ERR;
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return wdelch(win);
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}
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#endif
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/*
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* wdelch --
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* Do a delete-char on the line, leaving (cury, curx) unchanged.
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*/
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int
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wdelch(WINDOW *win)
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{
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__LDATA *end, *temp1, *temp2;
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#ifndef HAVE_WCHAR
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end = &win->alines[win->cury]->line[win->maxx - 1];
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temp1 = &win->alines[win->cury]->line[win->curx];
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temp2 = temp1 + 1;
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while (temp1 < end) {
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(void) memcpy(temp1, temp2, sizeof(__LDATA));
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temp1++, temp2++;
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}
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temp1->ch = win->bch;
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if (__using_color && win != curscr)
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temp1->attr = win->battr & __COLOR;
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else
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temp1->attr = 0;
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__touchline(win, (int) win->cury, (int) win->curx, (int) win->maxx - 1);
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return (OK);
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#else
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int cw, sx;
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nschar_t *np, *tnp;
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end = &win->alines[win->cury]->line[win->maxx - 1];
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sx = win->curx;
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temp1 = &win->alines[win->cury]->line[win->curx];
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cw = WCOL( *temp1 );
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if ( cw < 0 ) {
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temp1 += cw;
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sx += cw;
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cw = WCOL( *temp1 );
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}
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np = temp1->nsp;
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if (np) {
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while ( np ) {
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tnp = np->next;
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free( np );
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np = tnp;
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}
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temp1->nsp = NULL;
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}
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if ( sx + cw < win->maxx ) {
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temp2 = temp1 + cw;
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while ( temp1 < end - ( cw - 1 )) {
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( void )memcpy( temp1, temp2, sizeof( __LDATA ));
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temp1++, temp2++;
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}
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}
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while ( temp1 <= end ) {
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temp1->ch = ( wchar_t )btowc(( int ) win->bch );
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temp1->attr = 0;
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if (_cursesi_copy_nsp(win->bnsp, temp1) == ERR)
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return ERR;
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SET_WCOL(*temp1, 1);
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temp1++;
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}
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__touchline(win, (int) win->cury, sx, (int) win->maxx - 1);
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return (OK);
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#endif /* HAVE_WCHAR */
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}
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